The nurse receives a client from the post-anesthesia unit with a new onset of sinus tachycardia and a heart rate of 118 beats per minute. To which reasons does the nurse relate the increased heart rate? (Select All that Apply.)
Anxiety
Sleep
Fever
Hyperglycemia
Blood loss
Correct Answer : A,C,E
A. Anxiety:
Anxiety can lead to an increased heart rate due to the activation of the sympathetic nervous system. When a person is anxious, their body releases stress hormones like adrenaline, which can stimulate the heart to beat faster. This increased sympathetic activity can cause sinus tachycardia, where the heart rate is faster than normal.
B. Sleep:
While sleep can affect heart rate variability, causing fluctuations in heart rate during different stages of sleep, it typically does not cause a significant and sustained increase in heart rate like sinus tachycardia. Sleep is more likely to influence heart rate patterns rather than directly cause sinus tachycardia.
C. Fever:
Fever, especially in response to infection or inflammation, can lead to an elevated heart rate. The body's response to fever includes increased metabolic activity, which can raise the heart rate as part of the physiological stress response. Fever-induced sinus tachycardia is a common finding in individuals with infections.
D. Hyperglycemia:
While hyperglycemia (high blood sugar levels) can have cardiovascular effects over time, such as contributing to atherosclerosis and heart disease, it is not typically a direct cause of sinus tachycardia. Sinus tachycardia is more commonly associated with acute stressors like anxiety, fever, or hypovolemia (such as from blood loss).
E. Blood loss:
Significant blood loss, such as during surgery or due to trauma, can result in hypovolemia, where there is a decrease in blood volume circulating in the body. In response to hypovolemia, compensatory mechanisms kick in, including an increase in heart rate (sinus tachycardia), to maintain blood pressure and perfusion to vital organs.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. Initiate a peripheral IV:
Initiating a peripheral intravenous (IV) line may be necessary for clients with unstable angina to facilitate the administration of medications and fluids, especially if there is a need for further interventions or if the client's condition deteriorates. However, in this case, the client's chest pain has improved after receiving nitroglycerin, and there is no immediate indication for IV access based on the information provided.
B. Administer another nitroglycerin tablet:
Nitroglycerin is a vasodilator commonly used to relieve chest pain (angina) by dilating blood vessels and improving blood flow to the heart. The initial response of the client's chest pain severity decreasing from 6 to 2 after one sublingual nitroglycerin tablet indicates a positive response to the medication. However, it's important to assess the client's response further before administering additional doses of nitroglycerin, especially considering the potential for hypotension or other adverse effects.
C. Call the Rapid Response Team:
The Rapid Response Team (RRT) is typically called in situations where there is a concern for a critical event or deterioration of a client's condition that requires immediate intervention. In this scenario, the client's chest pain has improved after nitroglycerin administration, and there are no indications of an acute critical event at this time. Therefore, calling the RRT is not warranted based on the client's current status.
D. Obtain an ECG:
An ECG can be helpful to assess for potential ischemia or other cardiac abnormalities. However, it's not the most urgent action when the client is responding positively to nitroglycerin. It can be done while monitoring the client's response to the second dose.
Correct Answer is D
Explanation
A. Ribs: Ribs are not typically used for bone marrow aspiration procedures due to the difficulty of accessing bone marrow in this area.
B. Humerus: While bone marrow aspiration can technically be performed in the humerus (upper arm bone), it is not commonly used as a primary site because other sites like the iliac crest offer easier access and a larger volume of bone marrow.
C. Femur: The femur (thigh bone) is a potential site for bone marrow aspiration, especially in certain situations or specific patient populations. However, it is less commonly used compared to the iliac crest.
D. Iliac crest: The iliac crest is a primary site for bone marrow aspiration due to its accessibility, the relatively low risk of complications, and the ability to obtain an adequate sample of bone marrow for diagnostic purposes.
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